Insulated conductor



(No Model.)

0. N. WAITE. INSULATED CONDUCTOR.

Patented Jan. 9, 1894.

UNITED STATES PATENT O FICE.

CHARLES N. WAITE, OF NEWTON, MASSACHUSETTS.

' INSULATED CONDUCTOR.

SPECIFICATION forming part of Letters Patent No. 512,417, dated. January9, 1894. Application filed February 20, 1893. Serial No. 463, 7 model-lTo all whom it may concern:

Be it known that I, CHARLES N. WAITE, a citizen of the United States,residing at Newton, in the county of Middlesex and State ofMassachusetts, have invented certain new and useful Improvements inInsulated Oonductors, of which the following is a specification,reference being bad therein to the accompanying drawing.

In the manufacture of chlorine by the electrolysis of alkalinechlorides, the chlorine is conducted from the cells preferably by meansof lead pipes. I have found it desirable to insulate these lead gasconductors electrically.

My invention has for its object to provide a proper insulation for suchgas conductors and it consists of means for that purpose as hereinafterdescribed and the novel features of which are pointed out in the claimswhich are appended hereto and made a part hereof.

In the accom panyingdrawing, I have shown my device in the best form nowknown to me, and in the following specification I will refer to saiddrawing in which Ihave shown a section of two parts of a lead pipe orgas conductor which are connected, and which are insulated at the jointby the employment of my device.

Referring to the drawing, P P are sections of the lead gas conductor.The part P is provided with a cup-shaped enlargement b which is designedto receive the end of the other section of the gas conductor P, as alsothe insulating material.

a is a ring or wicking of asbestus, which is interposed between the endof the section P and the cup-shaped enlargement 12. Above the asbestusring is a mass of Trinidad asphalt d, or other similarv material, whichis not affected by the chlorine, and which serves to seal the joint. Thering of asbestus serves to hold the melted pitch or asphalt d after ithas been placed within the cup b and around the end of the section P ofthe gas conductor, until the pitch has had time to cool and harden. Itwill be noted that the end of the section P of the leaden gas conductorprojects downwardly below the asbestus ring. This is for the purpose ofpreventing any con densed vapor from coming in contact with the asbestusinsulation and thereby forming an electrical connection between the twosections of the conductor.

It will be obvious that the size and shape of the conductor may bevaried as desired.

What I claim is- 1. Agas conductor consisting of two or more sections,the end of one of the sections being enlarged to receive the proximateend of the other section, and having within the enlargement a ring orlayer of asbestus anda mass of asphalt, or similar substance, which willseal the joint, said asbestus and asphalt being interposed between theproximate portions of the sections of the conductor, substantially asand for the purposes set forth.

2. A metallic gas conductor consisting of two or more sections, one ofsaid sections being enlarged at the end to receive the end of the othersection and having within the enlargement a layer of insulating materialinterposed between the proximate portions of the sections, substantiallyas and for the purposes set forth.

3. A metallic gas conductor consisting of two or more sections, one endof said sections being enlarged at the end to receive the end of theother section, and a mass of insulating material and of sealing materialinterposed within the said enlarged end between the proximate portionsof the said sections whereby the same are insulated and the jointsealed, substantially as set forth.

4. A metallic gas conductor composed of two or more sections, one ofsaid sections having an enlarged end to receive the end of the othersection, and a layer of insulating ma terial interposed between theproximate portions of the endsof said sections, the end of that sectionwhich is received within the enlarged end of the other section extendingpast the insulating material whereby condensed vapor is prevented fromcollecting on the insulating material, substantially as set forth.

In testimony whereof I affix my signatur in presence of two witnesses.

. CHARLES N. WAITE. Witnesses:

WM. A. MAoLEoD, ROBERT WALLACE.

